:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1f2430;
  --muted: #6b7280;
  --border: #e2e4e9;
  --primary: #2f5fd8;
  --primary-dark: #2448ac;
  --danger: #d64545;
  --danger-dark: #b83535;
  --ok-bg: #e6f6ec;
  --ok-text: #1c7a3d;
  --error-bg: #fce9e9;
  --error-text: #a02f2f;
  --warn-bg: #fef3e0;
  --warn-text: #a3690f;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #000000;
    --card: #121212;
    --text: #eceef1;
    --muted: #9aa0a6;
    --border: #2a2a2e;
    --primary: #5b82e8;
    --primary-dark: #7b9bee;
    --danger: #e05a5a;
    --danger-dark: #ea7a7a;
    --ok-bg: #123822;
    --ok-text: #6fe3a0;
    --error-bg: #3a1414;
    --error-text: #ff8f8f;
    --warn-bg: #3a2c0d;
    --warn-text: #ffcf7a;
  }
}

:root[data-theme="dark"] {
  --bg: #000000;
  --card: #121212;
  --text: #eceef1;
  --muted: #9aa0a6;
  --border: #2a2a2e;
  --primary: #5b82e8;
  --primary-dark: #7b9bee;
  --danger: #e05a5a;
  --danger-dark: #ea7a7a;
  --ok-bg: #123822;
  --ok-text: #6fe3a0;
  --error-bg: #3a1414;
  --error-text: #ff8f8f;
  --warn-bg: #3a2c0d;
  --warn-text: #ffcf7a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background-color 0.15s ease, color 0.15s ease;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

.app-footer {
  text-align: center;
  padding: 16px 20px 24px;
  color: var(--muted);
  font-size: 0.78rem;
}

.app-footer a {
  color: var(--muted);
  text-decoration: underline;
}

.app-footer a:hover {
  color: var(--primary);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #0d0d0d;
  border-bottom: 1px solid #000;
  padding: 12px 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: #fff;
}

.brand-logo {
  height: 28px;
  width: auto;
  display: block;
}

.topbar nav a {
  margin-left: 20px;
  color: #c7c9cf;
  text-decoration: none;
  font-weight: 500;
}

.topbar nav a:hover {
  color: #fff;
}

.user-tag {
  margin-left: 20px;
  color: #fff;
  font-weight: 600;
  font-size: 0.85rem;
}

.theme-toggle {
  margin-left: 20px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  border-radius: 8px;
  padding: 6px 11px;
  font-size: 0.95rem;
  line-height: 1;
  cursor: pointer;
}

.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.16);
}

.login-box {
  max-width: 360px;
  margin: 60px auto 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
}

.login-box h1 {
  margin: 0 0 6px;
  font-size: 1.4rem;
}

.subtitle {
  color: var(--muted);
  margin: 0 0 20px;
  font-size: 0.9rem;
}

.login-box form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
}

.switch-link {
  margin-top: 16px;
  font-size: 0.85rem;
}

.switch-link a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
}

input[type="text"],
input[type="password"],
input[type="email"],
select,
textarea {
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  width: 100%;
  font-family: inherit;
}

input:disabled {
  background: var(--bg);
  color: var(--muted);
}

button, .btn-secondary {
  cursor: pointer;
  border: none;
  border-radius: 8px;
  padding: 9px 16px;
  font-size: 0.9rem;
  font-weight: 600;
}

button[type="submit"] {
  background: var(--primary);
  color: white;
}

button[type="submit"]:hover {
  background: var(--primary-dark);
}

.btn-secondary {
  background: var(--bg);
  color: var(--text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  margin-bottom: 16px;
}

.flash-list { margin-bottom: 18px; }

.flash {
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.flash-ok { background: var(--ok-bg); color: var(--ok-text); }
.flash-error { background: var(--error-bg); color: var(--error-text); }

.stats-row {
  display: flex;
  gap: 14px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 22px;
  display: flex;
  flex-direction: column;
  min-width: 110px;
  text-decoration: none;
  color: var(--text);
}

.stat-number {
  font-size: 1.5rem;
  font-weight: 700;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--muted);
}

.filters {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.filter-tabs {
  display: flex;
  gap: 4px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px;
}

.filter-tabs a {
  padding: 6px 14px;
  border-radius: 6px;
  text-decoration: none;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
}

.filter-tabs a.active {
  background: var(--primary);
  color: white;
}

.filters form {
  flex: 1;
}

.filters input[type="text"] {
  flex: 1;
  min-width: 220px;
}

.table-wrap {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th, td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

td a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

th {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge {
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: capitalize;
}

.badge-estado-abierto { background: var(--error-bg); color: var(--error-text); }
.badge-estado-en_progreso { background: var(--warn-bg); color: var(--warn-text); }
.badge-estado-cerrado { background: var(--ok-bg); color: var(--ok-text); }

.badge-prio-baja { background: var(--bg); color: var(--muted); }
.badge-prio-media { background: var(--warn-bg); color: var(--warn-text); }
.badge-prio-alta { background: var(--error-bg); color: var(--error-text); }

.empty {
  text-align: center;
  color: var(--muted);
  padding: 30px;
}

h1 {
  font-size: 1.4rem;
  margin-bottom: 18px;
}

h2 {
  font-size: 1.1rem;
  margin-top: 28px;
}

.mail-form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  max-width: 560px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mail-form label {
  margin-top: 10px;
}

.form-actions {
  margin-top: 20px;
  display: flex;
  gap: 10px;
}

.ticket-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.badge-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-danger:hover {
  background: var(--danger-dark);
}

.ticket-meta {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 4px;
}

.ticket-body {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  white-space: pre-wrap;
}

.estado-form {
  margin-top: 16px;
  max-width: 240px;
}

.comment-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.comment {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
}

.comment-soporte {
  border-left: 3px solid var(--primary);
}

.comment-head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
}

.comment-date {
  color: var(--muted);
  font-size: 0.78rem;
}

.comment p {
  margin: 0;
  white-space: pre-wrap;
}

/* --- Elementos agregados: categorías, métricas, adjuntos, historial --- */

.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.page-head h1 { margin-bottom: 10px; }

.filter-form {
  flex: 1;
  display: flex;
  gap: 10px;
  min-width: 260px;
}

.filter-form select { max-width: 220px; }

select {
  background: var(--card);
  color: var(--text);
}

.col-id {
  color: var(--muted);
  font-size: 0.82rem;
}

.col-cat {
  color: var(--muted);
  font-size: 0.85rem;
}

.mini-tag {
  color: var(--muted);
  font-size: 0.75rem;
  margin-left: 6px;
}

.badge-cat {
  background: var(--bg);
  color: var(--muted);
  border: 1px solid var(--border);
}

.ticket-num {
  color: var(--muted);
  font-weight: 600;
}

.paginacion {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 18px;
}

.paginacion .btn-secondary { margin-bottom: 0; }

.pag-info {
  color: var(--muted);
  font-size: 0.85rem;
}

.ayuda {
  color: var(--muted);
  font-size: 0.8rem;
  margin: 4px 0 0;
}

.separador {
  border: none;
  border-top: 1px solid var(--border);
  margin: 18px 0 4px;
  width: 100%;
}

input[type="file"] {
  padding: 8px 0;
  font-size: 0.85rem;
  color: var(--muted);
  width: 100%;
}

.solucion-box {
  background: var(--ok-bg);
  border: 1px solid var(--ok-text);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-top: 16px;
}

.solucion-titulo {
  color: var(--ok-text);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 6px;
}

.solucion-box p {
  margin: 0;
  white-space: pre-wrap;
}

.bloque-solucion { margin-top: 12px; }

.btn-warn {
  background: var(--warn-text);
  color: #fff;
}

.adjuntos-lista {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.adjunto {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  text-decoration: none;
  color: var(--text);
  min-width: 200px;
}

.adjunto:hover { border-color: var(--primary); }

.adjunto-icono { font-size: 1.1rem; }

.adjunto-datos {
  display: flex;
  flex-direction: column;
}

.adjunto-nombre {
  font-size: 0.88rem;
  font-weight: 600;
}

.adjunto-meta {
  font-size: 0.75rem;
  color: var(--muted);
}

.historial {
  list-style: none;
  padding: 0;
  margin: 0;
  border-left: 2px solid var(--border);
}

.historial li {
  padding: 8px 0 8px 16px;
  position: relative;
  font-size: 0.86rem;
}

.historial li::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 14px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
}

.hist-fecha {
  color: var(--muted);
  font-size: 0.76rem;
  display: block;
}

.hist-detalle {
  display: block;
  color: var(--muted);
  font-style: italic;
  margin-top: 2px;
}

.grafico {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.barra-fila {
  display: flex;
  align-items: center;
  gap: 12px;
}

.barra-etiqueta {
  min-width: 150px;
  font-size: 0.85rem;
  color: var(--muted);
}

.barra-pista {
  flex: 1;
  background: var(--bg);
  border-radius: 999px;
  height: 18px;
  overflow: hidden;
}

.barra {
  display: block;
  height: 100%;
  background: var(--ok-text);
  border-radius: 999px;
  min-width: 2px;
}

.barra-azul { background: var(--primary); }

.barra-valor {
  min-width: 34px;
  text-align: right;
  font-weight: 700;
  font-size: 0.9rem;
}

.dos-columnas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

@media (max-width: 640px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .topbar nav {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 0;
  }
  .topbar nav a, .user-tag, .theme-toggle { margin-left: 0; margin-right: 16px; }
  .stats-row { flex-wrap: wrap; }
  .barra-etiqueta { min-width: 100px; font-size: 0.78rem; }
}

.error-codigo {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--muted);
  line-height: 1;
  margin-bottom: 6px;
}